Curious about Audio Note Dacs and was hoping to get to hear one when I go to Birmingham later this week. Don't have much time but if possible would love to hear something from the range specifically the 2.1x or 4.1x. BTW How much are the 4.1x? Are they available in kit form? From what I can find on the net 4.1 is all that is available in kit form and that seems to be from the US. The uk site is fairly skimpy on info.